CN101432454B - Processing of waste or cyclone solids from the chlorination of titanium bearing ores - Google Patents
Processing of waste or cyclone solids from the chlorination of titanium bearing ores Download PDFInfo
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- CN101432454B CN101432454B CN2007800150204A CN200780015020A CN101432454B CN 101432454 B CN101432454 B CN 101432454B CN 2007800150204 A CN2007800150204 A CN 2007800150204A CN 200780015020 A CN200780015020 A CN 200780015020A CN 101432454 B CN101432454 B CN 101432454B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
- C22B34/1222—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes using a halogen containing agent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1236—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching
- C22B34/1259—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by wet processes, e.g. by leaching treatment or purification of titanium containing solutions or liquors or slurries
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/22—Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means, or by thermal decomposition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A process is provided for handling waste solids produced from the chlorination of titanium-bearing ores in the presence of coke as a reducing agent, in particular waste metal chloride solids from a chloride process for making pigmentary titanium dioxide, which process comprises cooling the product stream from chlorination, separating the solids therein from the gaseous components of the product stream, combining the waste metal chloride solids and unreacted ore and coke solids with a liquid whereby waste metal chloride solids are dissolved in the liquid and unreacted ore and coke solids are slurried in the liquid, separating out unreacted ore and coke solids from the liquid including the dissolved waste metal chlorides, then after separating out unreacted ore and coke solids from the liquid, dividing the liquid including the dissolved waste metal chlorides into a recycle substream or portion and a bleed substream or portion, recycling the recycle substream or portion to comprise at least a part of the liquid which is combined with the waste metal chloride solids and unreacted ore and coke solids in the product stream, and neutralizing the bleed substream or portion to produce a filterable or directly landfillable mass of waste metal hydroxide solids.
Description
The present invention relates to be used to handle the method for generation from the chlorating waste solid of titaniferous ore, and especially but be not limitation ot it, relate to the processing of waste metal chloride solids, described waste metal chlorides as be used for making pigment titanium dioxide chloride process produced.
At titanium tetrachloride (for example, be used for from its produce titanium metal or pigment, chloride-process titanium dioxide) industrial production, titaniferous ore, for example ilmenite, slag, synthetic or natural rutile, in the presence of coke, normally in fluidized-bed reactor, be chlorinated under about 1000 degrees centigrade temperature being equivalent to as reductive agent.Except the reaction product of expection, i.e. titanium tetrachloride, other foreign metal value (values) in mineral by chlorination continuously to produce the muriate of iron, nickel, vanadium, magnesium and other metal.
Normally, these waste metal chlorides be carried at the titanium tetrachloride that contains expection, contain " being dispelled " mineral and coke solids and contain various byproduct gas such as the product stream of carbon monoxide, carbonic acid gas and analogue in.Through over-heat-exchanger, quenching or similar operations so that after the chlorinator product stream cooled down, the product of chlorinating step entered the gas/solid separator, described separator is the form of cyclonic separator normally.Waste metal chloride solids is removed as " cyclone dust ", " chlorinator waste solid " or the analogue bottom from cyclonic separator with unreacted ore and coke solids.These chlorinator waste solids were before handled in many ways.
People's such as van der Meer United States Patent (USP) the 5th, 271, the solid residue of leaching cyclone dust to obtain to contain the muriatic solution of all foreign metals in fact and be made up of unreacted ore, silicon-dioxide and coke in containing the solution of hydrochloric acid proposed for No. 910, separate with solid as carrying out the dissolved impurity metal chloride by filtration, make the form precipitation of foreign metal muriate by neutralization subsequently, and filter cake dewatering to separate and to reclaim the metal hydroxides solid and will obtain so subsequently with their oxyhydroxide.
People such as Schinkitz are at United States Patent (USP) the 5th, 334, before the improvement that proposes themselves, have described many ordinary methods of handling the chlorinator waste solid in No. 362.Narrate as people such as Schinkitz, a kind of known theretofore method relates to cyclone dust " pulping (pasting up) and filter ", whereby the filtrate of suspension (mainly being the muriatic solution of iron (II)) to play useful products that mud regulates be callable and contain the filtration residue of coke or filter cake is removed or as fuel in wastewater treatment as being used for.With reference to United States Patent (USP) the 3rd, 655, No. 344, the variation according to reports of this method relates to " pulping, neutralization and filtration " step, and waste metal chlorides is converted into water-insoluble solid metal hydroxides form and can disposes with inert solid after filtration whereby.Filter cake is in the case compared with metal hydroxides sedimentary and that progressively finish, be described to " can be fully filtering " and reach " antithixotropy ", described metal hydroxides produces the method from EP390293A1 according to reports, wherein remaining unreacted ore of inert solid-particularly and coke-be recovered so that reuse in the discarded metal precipitation of hydroxide and before filtering.
People such as Schinkitz have proposed the improvement of EP390293A1 method in fact to them, useful inert substance can be separated the solid matter of antithixotropy " can be fully filtering, " that obtains according to reports but discarded metal oxyhydroxide is precipitated out under these conditions to be suitable for burying whereby.These examples disclose, and in first currently known methods, the solids content from cake of filter-press with the inert substance that does not reclaim is 46.5%, and in second known variant, solids content is reduced to 26.5%.Yet it is 37.7% to 39% that people's such as Schinkitz improvement is applied to second scope that changes the solids content that produces.People such as Schinkitz admit this difference, but point out by from filter cake, having saved inert mineral and coke solids, overall burying requires to reduce, and point out to be not only the minimizing of the attainable solids content in the payment filter cake by the rate capable of circulation (recyclability) and the general output value of the inert solid component that reclaims, and improved economic conditions.
The 5th, 935, No. 545 waters of people's such as Leary United States Patent (USP) quench cyclone dust and pulp, have formed the cyclone underflow slurry of dissolved metal chloride, and it comprises most of foreign metal muriates, mineral, coke and mine tailing solid.Recommend wet cyclone to be recycled to mineral in the chlorinator to reclaim some.Iron(ic) chloride and some other more lower boiling metal chlorides are carried in cyclone overflow, cool off and are precipitated out, with after any suitable gas-solid tripping device be separated.
The United States Patent (USP) the 6th of Hartmann, 399,033B1 number (common and US5,334,362 is designated together) use wet cyclone that the cyclone dust solids slurry is separated into underflow component that is rich in titanium dioxide (mineral) and the overflow component that is rich in coke and silicon-dioxide, the overflow component is filtered on band filter or pressure filter to produce as the solid of fuel and the filtrate that is suitable for rising the mud adjusting once more in wastewater treatment.Underflow similarly is filtered in band filter or pressure filter, and filter cake is dried and ground for recycle in the chlorinator the recommended chemical treatment that is used for waste water of filtrate simultaneously.By cyclone dust being used wet cyclone, subsequent drying also grinds solid in the wet cyclone underflow, has avoided coming the gathering of the silicon-dioxide on the chlorinator bed of the silicon-dioxide that carries in the comfortable cyclone dust.
The present invention relates on the one hand being used to handle and produces the improving one's methods of chlorating waste solid that there is titaniferous ore down in comfortable coke as reductive agent, and relates to the waste metal chloride solids that processing produces at the chloride process that is used for making pigment titanium dioxide aspect preferred.According to the method for improved invention, be present in from the solid in the product stream of chlorinator, comprise waste metal chloride solids and unreacted mineral and coke solids, be cooled and from the gaseous state composition of product stream, separate subsequently.Waste solid subsequently with liquid mixing, waste metal chloride solids is dissolved in the liquid and unreacted mineral and coke solids pulp in liquid whereby.From slurry, isolate unreacted mineral and coke solids subsequently, and the remaining liq that waste metal chlorides is dissolved in wherein is divided into cyclic part and flows out part.Cyclic part forms at least a portion of initial and waste solid blended liquid, but and the medium of outflow part that neutralize with generation discarded metal hydroxide solids.In one embodiment, but the medium of discarded metal hydroxide solids is filtered the discarded metal hydroxide solids material that can bury to produce in fact subsequently, and in another embodiment, the discarded metal hydroxide solids material that can directly bury flow out by neutralization that part realizes and so material need not at first to be filtered by burying to handle.
Fig. 1 is the synoptic diagram of the inventive method in a preferred embodiment.
Improvement provided by the invention is derived from following discovery: contain by circulation dissolving waste metal chlorides liquid a part and use its as being added at chlorinator pond (sump)/suspension container (suspension vessel) (as at United States Patent (USP) the 6th, 399, in No. 033)/quenching tank is (as at United States Patent (USP) the 5th, 935, in No. 545) waste solid at least a portion of liquid, rather than as at United States Patent (USP) the 6th, 399, No. 033 and the 5th, 935, only make water as liquid shown in No. 545, for example can generate the liquid part of the metal chloride of the dissolving with enough high concentrations, so that in neutralization subsequently, even in the situation that does not have unreacted mineral and coke solids, can realize that higher solids content (compares the people such as Schinkitz, United States Patent (USP) the 5th, 334, No. 362 and EP390293A1 wherein discuss).
Setting up competent circulation loop so that highly concentrate in practice under the situation of dissolved waste metal chlorides, flowing out after part has been neutralized, the per-cent of the neutral discarded metal oxyhydroxide that flows out part can be like this so that solid be by weight be equivalent to 45% or major part higher and neutral discarded metal oxyhydroxide be suitable for directly being buried.By this way, avoided expensive thickening material, pressure filter and analogue.Further, at United States Patent (USP) the 5th, 935, No. 545 and United States Patent (USP) the 6th, 399, in No. 033 context, in suspension container or quenching tank, use the liquid contain waste metal chlorides (water metal chloride) but not the cyclic part of water, will be respectively (respectfully) in the liquid load that reduces downstream processing, storage and transportation in these methods, provide benefit, for example, with at United States Patent (USP) the 6th, 399, the logistics 19 in No. 033 is relevant with production, storage and the transportation of logistics 20.At last, even the dissolved waste metal chlorides is not recycled and is concentrated to a certain degree situation in method under, produce the discarded metal oxyhydroxide material that directly to bury whereby, yet found to make enough improvement so that do not need prethickening (otherwise may need) so that filter waste and obtain to be suitable for subsequently buried waste by gravure, film press type, candle formula or other conventional filtration unit.In further related fields still, use in the dry substance and the dissolved waste metal chlorides-for example, use dry lime or with one or more bonded dry lime of the cement kiln dust that comes from the coal-burning power plant, lime kiln dust and flyash, rather than slaked lime slurry-providing more easily to reach more promptly filtering solution and more highly filled filter cake, it has reduced the hydraulic pressure load of strainer in addition.
Go to Fig. 1 now, schematically set forth method of the present invention in preferred embodiment at one.Via logistics 10 will from gas/solid separator (not shown) for example the waste solid of the chlorinator of cyclonic separator be provided in chlorinator pond or the suspension container 12.The cyclic part 14 of aqueous waste metal chloride solution 16 mixes in container 12 with chlorinator waste solid 10 and make up water 18, wherein cyclic part 14 has the such volume relevant with make up water 18, so that the soluble waste metal chlorides that is included in the chlorinator waste solid logistics 10 all dissolves in the aqueous solution basically, but that this aqueous solution keeps aspect waste metal chlorides is very concentrated.Preferably, in unreacted mineral and coke solids 20 in solid/liquid separation apparatus 22 (it can be the combination of wet cyclone, filtration unit or wet cyclone and strainer) after separated the going out, the proportion of moisture metal chloride solutions 16 residuums will be at least about 1.07, but more preferably will be near proportion corresponding to the waste metal chlorides solubility limit, for example, under about 20 degrees centigrade temperature, be about 1.28.
The unreacted mineral of pulp and coke solids and spissated dissolved waste metal chlorides are transported in the solid/liquid separation apparatus 22 from container 12 as logistics 24.By means of solid/liquid separation apparatus 22, preferably basically all unreacted mineral and coke solids are recovered in the logistics 20 and these subsequently can US5 935,545 or US6,399,033 mode is circulated to (not shown) in the chlorinator, for example or can be used as fuel.Aqueous waste metal chloride solution 16 is divided into cyclic part 14 and flows out part 28 by splitter 26 subsequently, and wherein cyclic part 14 preferably was cooled in heat exchanger 30 before by add-back container 12.
Flow out part 28 and be neutralized by mixing subsequently with one or more exsiccant or solid material, such as institute's suggestion mix by logistics 32 with arrival mixing vessel 34.Dry lime can be used separately, but because its relative bigger cost, preferably, other material of dry lime and one or more is used in combination, and described other materials are for example from cement kiln dust (CKD), lime kiln dust (LKD) and the flyash of coal-burning power plant.One or both are all under the situation that dry lime is used in CKD and LKD, preferably use CKD and/or LKD so that the pH of solution for about 4.5, use dry lime subsequently and is elevated to about 8.5 with the PH with solution at first step.Under flyash and situation that dry lime is used in combination, these materials can sequentially be used or be used simply as the mixture in independent logistics 32 as described quilt just now.Cement kiln dust, lime kiln dust and flyash from the coal-burning power plant all are commercial obtainable materials, for CKD, from company such as Holcim Ltd. (Zurich) and LaFarge Group (Paris), for LKD, from Graymont Inc. (Richmond, BritishColumbia, Canada) or Greer Lime Company (Riverton, West Virginia) and for flyash, from many coal-burning power plants any one.
Result as neutralization procedure, dissolved waste metal chlorides in flowing out part 28 is preferably basically fully as the discarded metal oxyhydroxide species precipitate that is suitable for directly burying come out (hint by stray arrow head 36) or generation discarded metal hydroxide slurry (logistics 38), it does not need prethickening and its to reach effectively to be filtered economically discarded metal oxyhydroxide material (logistics 42) and the filtrate (not shown) that can bury to produce in strainer 40, described filtrate can be used usually, for example, as at US5,935,545 or US6, in 399,033 as the chemical reagent of water treatment.
Set forth the present invention in more detail by following examples.
Embodiment 1
Waste metal chlorides is made the aqueous solution, and it has 1.28 proportion, and described waste metal chlorides is come the makers' chlorinator of pigment titanium dioxide in the comfortable chloride process.It is 9 that 100 this solution of gram use 19.6 gram dry lime pH that neutralizes.The throw out that is produced comprise blended liquid and discarded metal hydroxide solids by weight 45%, be considered to the sufficiently high solids content that can directly bury, and be comparable to the numerical value of the performance of conventional gravure strainer, described gravure strainer is at 165 pounds/square inch to 225 pounds/square inch (1140kPa, gauge pressure is to 1550kPa, gauge pressure) operation down.
Embodiment 2 to embodiment 7
For embodiment 2, waste metal chlorides is made the aqueous solution, it has 1.07 proportion, and described waste metal chlorides is come the makers' chlorinator of pigment titanium dioxide in the comfortable chloride process.This solution also filters in film press type strainer under 225 pounds/square inch (1550kPa, gauge pressures) subsequently with the slaked lime slurry neutralization.In embodiment 3 to embodiment 7, repeat this test subsequently, under each situation, note needed filtration time and the percentage of solids in filter cake.
The result is as shown in the table 1:
Table 1
| Embodiment | Total filtration time is in minute (combined feed total feed, squeezing time) | The cake percentage of solids |
| 2 | 45 | 50.15 |
| 3 | 56 | 46.84 |
| 4 | 55 | 47.44 |
| 5 | 55 | 45.49 |
| 6 | 50 | 48.40 |
| 7 | 50 | 51.63 |
| On average: | 51.83 | 48.33 |
Embodiment 8 to embodiment 10
Arrive for embodiment 8
Embodiment10, prepare the solution of 1.07 identical proportions, but with dry lime rather than slaked lime slurry (slaked like slurry) neutralize (before filtering in the mode identical with embodiment 2 to embodiment 7).The result is displayed in Table 2:
Table 2
| Embodiment | Total filtration time, in minute | The cake percentage of solids |
| 8 | 37 | 55.51 |
| 9 | 47 | 55.76 |
| 10 | 35 | 56.16 |
| On average: | 40 | 55.81 |
From the comparison of table 1 and table 2, can find out, when in neutralization, using dry lime rather than using slaked lime slurry, the improvement in observing aspect average filtration time (proximate 56 minutes to 40 minutes) and the percentage of solids in filter cake (proximate 48% pair almost 56%) two.Therefore, use the dry lime neutralization to be better than using the slaked lime slurry neutralization.
Claims (12)
1. one kind is used to handle the method for generation leisure as the chlorating waste solid of titaniferous ore under the existence of the coke of reductive agent, and it comprises:
With the chlorating product stream cooling that produces from described titaniferous ore, described product stream comprises waste metal chloride solids and unreacted mineral and coke solids;
From the gaseous state composition of described product stream, separate waste metal chloride solids and unreacted mineral and coke solids;
With described waste metal chloride solids and unreacted mineral and coke solids and liquid mixing, waste metal chloride solids is dissolved in the described liquid and unreacted mineral and coke solids pulp in described liquid whereby;
From the described liquid that comprises the dissolved waste metal chlorides, isolate unreacted mineral and coke solids;
Isolate unreacted mineral and coke solids from described liquid after, the described liquid that will comprise described dissolved waste metal chlorides is divided into a circulation logistics or cyclic part and flows out a logistics or the outflow part;
Make described circulation prop up the circulation of logistics or cyclic part to comprise and described waste metal chloride solids in described product stream and at least a portion of unreacted mineral and coke solids blended liquid; And
But the described outflow that neutralizes is propped up logistics or is flowed out part to produce the medium of discarded metal hydroxide solids.
2. the method for claim 1, but it comprises that further the medium that filters described discarded metal hydroxide solids is to produce the discarded metal hydroxide solids material that can bury.
3. the method for claim 1, but the medium of wherein said discarded metal hydroxide solids is characterised in that having enough solids contents be need not can directly burying to filter, and in fact need not at first to be filtered by burying to handle but reach wherein said medium.
4. method as claimed in claim 3, but the solids content of wherein said medium is by weight at least 45%.
5. the method for claim 1, wherein said circulation are propped up logistics or cyclic part and are characterised in that to have at least 1.07 proportion.
6. method as claimed in claim 5, wherein said circulation are propped up logistics or cyclic part and are characterised in that to have 1.28 proportion under 20 degrees centigrade.
7. the method for claim 1, wherein said dissolved waste metal chlorides neutralizes by mixing with one or more solids that comprise dry lime.
8. method as claimed in claim 7, wherein said dissolved waste metal chlorides neutralizes by at first mixing with in cement kiln dust, lime kiln dust or the flyash one or more, mixing in dry lime then.
9. method as claimed in claim 7, wherein said dissolved waste metal chlorides in a step with described dry lime and mix simultaneously and neutralize with flyash.
10. the method for claim 1, wherein said waste metal chloride solids and unreacted mineral and coke solids are separated from the gaseous state composition of described product stream in cyclonic separator.
11. method as claimed in claim 10 is wherein isolated the described step of unreacted mineral and coke solids and is used at least one wet cyclone from the described liquid that comprises described dissolved waste metal chlorides.
12. method as claimed in claim 11, wherein described unreacted mineral of being separated at least in part by means of wet cyclone and coke solids are recycled and turn back to described chlorinating step.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/412,816 US7943103B2 (en) | 2006-04-27 | 2006-04-27 | Waste solids handling |
| US11/412,816 | 2006-04-27 | ||
| PCT/US2007/008461 WO2007127028A1 (en) | 2006-04-27 | 2007-04-04 | Processing of waste or cyclone solids from the chlorination of titanium bearing ores |
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| Publication Number | Publication Date |
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| CN101432454A CN101432454A (en) | 2009-05-13 |
| CN101432454B true CN101432454B (en) | 2011-04-20 |
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| CN2007800150204A Expired - Fee Related CN101432454B (en) | 2006-04-27 | 2007-04-04 | Processing of waste or cyclone solids from the chlorination of titanium bearing ores |
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| Country | Link |
|---|---|
| US (1) | US7943103B2 (en) |
| EP (1) | EP2010684B1 (en) |
| JP (1) | JP4819157B2 (en) |
| CN (1) | CN101432454B (en) |
| AT (1) | ATE526427T1 (en) |
| AU (1) | AU2007243591C1 (en) |
| TW (1) | TWI410376B (en) |
| WO (1) | WO2007127028A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2487183C1 (en) * | 2012-01-10 | 2013-07-10 | Учреждение Российской академии наук Институт химии и химической технологии Сибирского отделения РАН (ИХХТ СО РАН) | Method for complex processing of kyanite |
| US8691167B2 (en) * | 2012-07-19 | 2014-04-08 | Tronox Llc | Process for controlling carbonyl sulfide produced during chlorination of ores |
| CN103773975B (en) * | 2012-10-26 | 2015-04-15 | 安徽威达环保科技股份有限公司 | Chloride waste residue treatment fume purification system for production of titanium sponge |
| RU2518807C1 (en) * | 2013-01-30 | 2014-06-10 | Федеральное государственное бюджетное учреждение науки Институт химии и технологии редких элементов и минерального сырья им. И.В. Тананаева Кольского научного центра Российской академии наук (ИХТРЭМС КНЦ РАН) | Method of kyanite concentrate recycling |
| CN105107830B (en) * | 2015-09-24 | 2017-12-08 | 云南冶金新立钛业有限公司 | Method for treating boiling chlorination waste residue |
| RU2653519C2 (en) * | 2015-12-11 | 2018-05-10 | Акционерное общество "Ордена Трудового Красного Знамени Научно-исследовательский физико-химический институт им. Л.Я. Карпова" (АО "НИФХИ им. Л.Я. Карпова") | Method for production of titanium tetrachloride |
| CN111484252A (en) * | 2020-04-26 | 2020-08-04 | 烟台泰新环保科技有限公司 | Method for resource utilization of hazardous waste incineration residue by melting, chloridizing and roasting |
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- 2007-04-04 AT AT07754900T patent/ATE526427T1/en not_active IP Right Cessation
- 2007-04-04 JP JP2009507695A patent/JP4819157B2/en not_active Expired - Fee Related
- 2007-04-04 AU AU2007243591A patent/AU2007243591C1/en not_active Ceased
- 2007-04-04 EP EP07754900A patent/EP2010684B1/en not_active Not-in-force
- 2007-04-04 WO PCT/US2007/008461 patent/WO2007127028A1/en active Search and Examination
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Also Published As
| Publication number | Publication date |
|---|---|
| US7943103B2 (en) | 2011-05-17 |
| US20070264178A1 (en) | 2007-11-15 |
| TWI410376B (en) | 2013-10-01 |
| EP2010684B1 (en) | 2011-09-28 |
| CN101432454A (en) | 2009-05-13 |
| JP2009535196A (en) | 2009-10-01 |
| ATE526427T1 (en) | 2011-10-15 |
| AU2007243591A1 (en) | 2007-11-08 |
| JP4819157B2 (en) | 2011-11-24 |
| AU2007243591C1 (en) | 2012-02-23 |
| TW200804192A (en) | 2008-01-16 |
| AU2007243591B2 (en) | 2011-09-15 |
| WO2007127028A1 (en) | 2007-11-08 |
| EP2010684A1 (en) | 2009-01-07 |
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